Zero-dimensional polariton laser in a subwavelength grating-based vertical microcavity
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Semiconductor exciton-polaritons in planar microcavities form coherent two-dimensional condensates in non-equilibrium. However, the coupling of multiple lower-dimensional polariton quantum systems, which are critical for polaritonic quantum device applications and novel cavity-lattice physics, has been limited in conventional cavity structures. Here, we demonstrate full non-destructive confinement of polaritons using a hybrid cavity composed of a single-layer subwavelength grating mirror and a distributed Bragg reflector. Single-mode polariton lasing was observed at a chosen polarization. The incorporation of a designable slab mirror in a conventional vertical cavity, when operating in the strong-coupling regime, enables the confinement, control and coupling of polariton gasses in a scalable fashion. This approach may open the door to experimental implementations of polariton-based quantum photonic devices and coupled cavity quantum electrodynamic systems.
Zhang , B , Wang , Z , Brodbeck , S , Schneider , C , Kamp , M , Hoefling , S & Deng , H 2014 , ' Zero-dimensional polariton laser in a subwavelength grating-based vertical microcavity ' Light: Science & Applications , vol 3 , e135 . DOI: 10.1038/lsa.2014.16
Light: Science & Applications
© 2014 Zhang et al. This work is licensed under the Creative Commons Attribution-NonCommercial-No Derivative Works 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/.
BZ, ZW and HD acknowledge support from the National Science Foundation under Awards DMR 1150593 for measurements and OISE 1132725 for travel expenses and the Air Force Office of Scientific Research under Award FA9550-12-1-0256 for device fabrication and characterization. CS, SB, MK and SH acknowledge support from the State of Bavaria, Germany. Fabrication of the SWG was performed at the Lurie Nanofabrication Facility, which is part of the National Science Foundation NNIN network.
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